Model: S10 Blazer
Engine Size: 4.3L
Refrigerant Type: R134
Ambient Temp: na
Pressure Low: na
Pressure High: na
Country of Origin: United States
I will be replacing the original Delphi 8284 compressor (HT6 type) on my 2004 S10 Blazer this next Friday due to a defective Competere clutch. Clutch wants to "grab" even when a/c is turned off. Essentially lost its gap; however, pulling it out a bit results in clutch plate just wanting to wobble. Have read that this is caused by the failure of some "torsional component" in the clutch. Original compressor still seems to run fine, but has 6 years of duty. Will be replacing the accumulator and OT as well. Replacement components are from AMA -- using the recommended Valeo 10000324 (AMA part no) compressor/clutch as well as all the other goodies.
New Valeo compressor calls for 180 CC of oil (6 fl oz). The question I have is: How much oil do I add to the system since I know some is retained in remaining components? I do not know what the original total oil charge was in the system and cannot find that information. I've never found any info so far confirming whether the total system OEM charge is just what the compressor calls for, or is it that amount plus "some more", whatever that may be.
Should I just use the "drain compressor and accumulator oil, measure it, and add this amount + 2 oz" as I have seen in other posts? That seems to fit pretty well since I have seen information saying that the condenser and evaporator "retain" around 1-1/2 oz; however, I have no verification of that. I could also see factoring in the 6 oz Valeo spec into the calculation as well. I figure I need to have a minimum of 6 oz of total oil in any event.
Or, is there a different/better alternative method?
And, depending on the total mount, I would plan to split the oil charge between compresson and accumulator.
Thanks a bunch,